Coach loch



Sept; l932- E. G. SIMPSON ETAL 1,877,503

COACH LOCK Filed July 18, 192'! 2 Sheets-Sheet 1 p 1932 E. s. SIMPSON ET AL 1,877,603

COACH mcx Filed July 18, 1927 2 Sheets-Sheet 2 r' J Desanq. BY Jebn 3.411

ATTORNEY.

' Patented Sept. 13 1%32 EMORY Gil -Elli? snarsoir, AETEE'E 55. DE @Aifit, AND JOHN B. FLYNN; 013 DETROIT,

MIGEIGAN, A$8IGNOR$ T TERETQTEDT MJMETEUFAGTURING COMPANY, 012 DETROIT, v MICHIGAN, A COBJPQMTIGN 019 HIIGAN canon .en

Application filed July 18, 19%.. Serial No. 206,415.

This invention relates to coach locks. The features of improvement are:

The lock handle slides freely through the felt washer retaining bushing consequently it is necessary to secure the handle shank to the-roll back so that the handle shank cannot move longitudinally. This is done by an improved fastening means in the way of a bolt havin a head of minimum size.

One of t e great problems that has arisen during the last few years in connection with coach locks is the breaking of the locks by turnin them with the aid of a lever. Since the T orm handle has come into vogue automobile thieves make a practice of carrying a piece of pipe, this they slip over one end of the handle and by using this as a lever are easily able to break almost any lock, the dog ging. or looking devices not being strong enou h to stand against this lever. It is also .possi is to force the handle with a heavy wrench or other tool.

"W e have designed a lock assembly in which the cylinder locks into abushi-ng which is tied up with a handle spindle and separate from the handle itself. The handle itself is secured to the handle spindle. or shank by ible connection is that even after it has been broken there remains sufiicient friction with which to retract the bolt when the owner arrives and unlocks the door by means of inserting a key in the spindle. These and other features w' l more fully appear in the specification following.

' Referring to the drawings:

Fig. 1 is a fragmentary perspective of an automobile equip ed with our improved thief proof coach loclr.

Fig. 2 is a horizontal cross section through the door post showing the lock. 7

Figs. 3, d, and 5 are sections on the correspon ing section linesof Fig. 2.

Fig. 6 is a detzfiled perspectiveof the han- J h is spun down onto the washer. This forms a seat to take the screw head 2' and very much reduces the size of the screw head so as to make the screw head not unduly prominent on the inside of the car.

The cylinder lock 03 is provided with the usual tumblers j which may be of any particular construction desired. This turns within a bushing is which is provided with two tumbler recesses m which are adapted to receive the tumblers n. Bushing 7c is coupled up at o with the hollow tubular handle shank p in which the lock spindle 0 turns. This lock spindle is held rotatably against longitudinal movement within the hollow shank p by means of the pin 1" en aged in the annular groove .9. The end of t e spindle is provided with an eccentric pin t which engages in the bolt to. This bolt 1/. is arranged to be shot into the socket formed by the clip on riveted on to the back of the lock case so as to lock the handle shank p from rotation (see Fig. 3).

By inserting the key in the key hole of the cylinder lockall the tumblers are caused to be withdrawn flush with or below the periphcry of the cylinder, it can then be turned and turns the spindle which,- by means of the eccentric pin t withdraws or shoots the bolt. By reason of the two tumbler recesses, it is possible to either disengage the lock or set the lock and then withdraw the key after half a turn has been made.

The lock handle y is simply die cast onto the handle shank p. However, a groove 2 is provided which prevents the handle from I moving longitudinally of the shank. This handle connection with the handle shank is preferably a destructible one which, of course, could be made in other ways but we prefer to make it by simply die casting the handle right over the shank. The smoothness of the shank and the character of the alloy may be so made that the tie between the two is essentially a destructible one and weaker than the locking dog (not shown) in the lock, or the locking bolt. The result will be that if any attem tis made to force the lock as by means of a plece of tube T (Fig. 1) the handle will break from its shank and spin around on the handle shank as shown b the dotted lines of this figure. However, t ere is sufiicient frictional drag due to this die cast connection so that when the owner gets back to his car and finds the lock has been tampered with he does not have to break the glass to get in. The frictional drag is suflicient so that when the owner turns the cylinder lock he can, by manipulating the handle retract the bolt and et into his car and drive it to a place where e can get his look replaced or fixed. I

We have described the several improvements in connection with the spindle lock but it will be apparent that the destructible connection principle may be used on those doors where no key operated lock is used, but only an inside dog, hence we want it understood that we are in no way confined to the s indle look but we have illustrated it with t is spindle lock because its use with a spindle lock requires considerable difficulty and adaptation, which we have overcome in the manner described.

By utilizing the clip as a lock socket we are able to utilize a felt washer receiving bushing designated w. This bushing allows a certain amount of rocking of the handle on numerous axes to adapt itself to a varying relation between the hole through the door post and the roll-back of the lock.

We appreciate that this handle is used in connection with latch mechanism but we have designedly used the term lock for the reason that these instrumentalities are always known in the automobile industry as locks and not latches, and for the further reasons that the mechanism is also a technical lock byreason of the use of the dog or bolt device, either of which we refer to in the claims as locln'ng mechanism. t

In the claims we use the words means for locking the same against operation and similar words to cover either the locking bolt shown in f ig. 3 of the drawings, or the lockin}; dog referred to above but not shown. It is thought unnecessary to show the locking dog as these are common and old in the art for engaging the roll-back on the outside handle shaft. Ordinarily on three doors of an automobile (where four are emplo ed) no key lock is used but simply a turn utton' and the locking dog, and on the fourth one usually a key lock is used. The locking means that we have shown inthis application is the one applied to the key lock door, where it is in the form of a-locking bolt, as shown in Fig.

3. It will be obvious, however, that our invention' is equally applicable to some other form of lockin means, such as the conventional form of 0g.

What we claim is:

1. In a lock the combination of a roll-back,

a shank, a lock bushing, a locking mechanism including a cylinder lock having tumblers locking into said bushing, and a handle cast onto the shank with a destructible connection weaker than the lockingmechanism and arranged to be independent-of said bushing.

2. In a lock the combination of a roll-back hub, counterbored at one end and having a non-circular opening,a washer secured in said counterbored portion, a handle shank squared 4 hold it in place and a handle shank having asquared end passed through the opening in the roll-back and provided with a tapped opening and a screw turned into the open ng and having its head abutting against the washer.

4. In an anti-theft lock for automobiles or similar use, a turnable handle shank, means for locking the same a ainst rotation, a handle secured to the shank and capable of being forced by a lever or otherwise, and a connection between said handle and shank which 'ves way when the handle is forced, wherey the lock'itself cannot be forced.

5. In an anti-theft lock for automobiles or similar uses, a turnable handle shank, means for locking the shank against rotation, a handle having a crank portion with which an instrument may beattached to increase the leverage to force the lock, and a connection between the handle and the handle shank which gives way under such forcing to prevent the lock from breaka 6. In an anti-theft look similar uses, a combination of a lock for the automobile door, a handle capable of forcing with the aid of tools, and connections between the handle and lock for retracting the lock bolt, means for locking the handle operated parts against rotation, said connections including a weakened connection arranged to give way when the handle'is subjected to orce. 1

r automobiles or I the locking means are set whereby turning of the handle is ineffective to retract the bolt, said breakable connection at all times being sufficiently strong to retract the bolt when the locking means are released.

In testimony whereof we aifix our signa 'tures.

EMORY GLENN SIMPSON. ARTHUR J; DE SANA. JOHN B. FLYNN.

. in the-handle journal, said member being I coupled to the shank whereby upon actuation of the handle following the destruction of said destructible connection said rotating member is held against rotation. I v

9; In a lock the combination of a roll-back, a handle shank for turning the same, means for locking one of the former elements against operation and a handle secured on said shank by a destructible connection of greater weakness than the locking mecha 'nisrn, 10. In a lock the combination of a rollback, a handle shank for turning the same, means for locking one of the former elements against operation, a handle secured to the shank by a destructible connection but also one that has a frictional drag relation with the handle when the destructible connection has been broken whereby when the locking mechanism has been released it will still operate the roll-back.

11. In an anti theft lock the combination of a rollback, a shank for turning the rollback, a handle for turning the said shank, the" said shank having a destructibleconnection with at least one of the other of aforesaid elements, and'locking means for locking one of the above elements other than the ban -dle against operation, said destructible connection being weaker than the locking mech-' anism whereby turning of the handle isineffective to retract the lock bolt when the 7 locking means are set.

12. In an anti-theft lock, the combination with bolt retracting means including a banlockin means are not set.

dle, a shank, and a rollback, of locking means for locking one of the parts of said retracting means against operation, said retracting means havin a destructible connection between two 0 its parts-which connection is weaker than the locking means but always strong enough to retract the bolt when the 13. in an anti-theft lock the combination of a lock having a bolt, a' handle, connections between the handle and the bolt for retractmg the bolt, locking means between the handle and the bolt which-can be set to prevent normal retraction of the -bolt by the handle, the above mentioned connections including a breakable connection arranged to break when i III 

